Table of Contents
Which of the information will allow you to calculate the kilowatt hr usage?
Explanation: power consumed x time in hours.
When a positive charge moves in the direction of the electric field what happens to the electrical potential energy associated with the charge?
When a positive charge moves in the direction of the electric field, what happens to the electrical potential energy associated with the charge? It decreases. Two positive point charges are initially separated by a distance of 2 cm.
How is the current affected if the number of charges in a given time interval decreases?
Since current is charge transferred per unit time, it increases when the same amount of charge is transferred in a smaller time interval.
What is the energy possessed by a charge due to its position in an electric field?
What is the energy possessed by a charge due to its position in an electric field? the magnitude of charge B. Potential difference is. the ratio of the change in potential energy to the magnitude of a charge.
Which of the following is characteristic of electrical fields?
Properties of an Electric Field Field lines never intersect each other. They are perpendicular to the surface charge. The field is strong when the lines are close together, and it is weak when the field lines move apart from each other. The number of field lines is directly proportional to the magnitude of the charge.
How do you calculate kWh from watts?
Here’s the Formula for Calculating Watts Into Kilowatt-Hours: kWh = (watts × hrs) ÷ 1,000.
How do you calculate kW to kWh?
How Do You Calculate kWh vs. kW? Divide the wattage by 1,000 to calculate kW: 1500 watts 1,000 = 1.5 kW. Multiply the kilowatts by the hours of daily use: 1.5 kW X 2 hours = 3 kWh per day. Find the total energy usage for a month (30 days): 3 kWh X 30 days = 90 kWh per month.
What direction does a positive charge move in an electric field?
Electric field is a vector quantity whose direction is defined as the direction that a positive test charge would be pushed when placed in the field. Thus, the electric field direction about a positive source charge is always directed away from the positive source.
When a positive charge is released and moves in electric field?
When the positive charge is released from rest in the uniform electric field, it moves along the direction of the electric field due to the electrostatic force acting on it and not in the opposite direction of the electric field.
Why does positive charge move along the direction of electric field?
If a positive charge is moving in the same direction as the electric field vector the particle’s velocity will increase. If it is moving in the opposite direction it will decelerate. If a negative charge is moving in the same direction as the electric field vector the particle will decelerate.
How does charge affect current?
Two objects that have opposite charges exert attractive forces on each other. Current is the rate of flow of positive charge. Current can be caused by the flow of electrons, ions or other charged particles. Electrons are negatively charged, so the direction electrons flow is the opposite direction to current.
What will happen to the current if the charge increases?
More collisions means it takes longer for the charge to ‘get through’ the component. The charge is moving slower and so the current is lower. Or, is it that the speed is always the same and that somehow if we have more resistance then it means there is just less charge able to flow, hence a lower current.
What is current formula?
Current is usually denoted by the symbol I. Ohm’s law relates the current flowing through a conductor to the voltage V and resistance R; that is, V = IR. An alternative statement of Ohm’s law is I = V/R.
What is a complete path for electric charge?
electric circuit. is a complete path through which charge can flow.
How much energy is supplied to each Coulomb of charge that flows through a 12 V battery?
A 12-volt battery provides 12 Joules of energy for every 1 Coulomb of charge which it moves from the low energy location to the high energy location. As such, the voltage rating of a battery simply describes the energy change of every coulomb of charge which is moved between terminals.
What determines the net charge on a capacitor quizlet?
The net charge on a charged capacitor depends on the distance between the capacitor plates.
How do you calculate the electric field?
In vector calculus notation, the electric field is given by the negative of the gradient of the electric potential, E = −grad V. This expression specifies how the electric field is calculated at a given point. Since the field is a vector, it has both a direction and magnitude.
What is electric field formula?
An electric field is also described as the electric force per unit charge. The formula of electric field is given as; E = F /Q.
How do you calculate kWh?
The “kilowatt-hours” you see on your power bill expresses the amount of power that you consumed in a month. To calculate the kWh for a specific appliance, multiply the power rating (watts) of the appliance by the amount of time (hrs) you use the appliance and divide by 1000.
How do I calculate kWh in single phase?
Single-Phase Calculations Basic electrical theory tells us that for a single-phase system, kW = (V × I × PF) ÷ 1,000. kW = (V × I) ÷ 1,000.
What is kWh explain?
The kilowatt-hour (SI symbol: kW⋅h or kW h; commonly written as kWh) is a unit of energy equal to one kilowatt of power sustained for one hour or 3600 kilojoules (3.6 megajoules). It is commonly used as a billing unit for energy delivered to consumers by electric utilities.
