electric energy power

What is the energy possessed by a charge due to its position in an electric field?

• electrical potential energy

• electrical kinetic energy

• electrical mechanical energy

• electrical potential difference

Tags

NGSS.HS-PS3-2

Electric power is the rate at which charge carriers

• pass through an area

• do work

• move through a potential difference

• collide with atoms

kilowatt hour is equa to

• 1000W for 3600s

• 1500W for 3600s

• 1000W for 3000s

• 500W for 10s

Which of the following equations is an equation for power, involving current and resistance?

• P= I/V

• P = IR

• P = IVR²

• P = I²R

Which of the following is an equation for power, involving voltage and resistance?

• P = V/R

• P = V²/R

• P = VR

• P = V²R²

A kilowatt-hour is equal to ____________ joules.

• 3,600

• 360,000

• 3,600,000

• 360,000,000

DIMENSIONS OF VOLTAGE

• $ML^2T^3A^{-1}$

• $MLT^3A^{-1}$

• $M^2L^2T^{-3}A^{-1}$

DIMENSIONS of current density

• $L^{-2}A$

• $L^2A$

• $LA^2$

• $L^{-1}A$

A storage battery of emf 8V and internal resistance 0.5 ohm is being charged by a 120 V d.c supply using a series resistor of 15.5 ohm. What is the terminal voltage of the battery during charging?

• 11.5 v

• 10.5 v

• 12.5v

• 1.15v

Two cells of emf 1V and 2V and internal resistance 2 ohm and 1 ohm are connected first in series then in parallel. what should be the external resistance in the circuit so that the current through the resistance be same in the two cases?

• 9/4 ohm

• 4/9 ohm

• 1/9 ohm

• 5 ohm