Potential Difference

A 12 V battery does 1200 J of work transferring charge. How much charge is transferred?

• 14400C

• 100C

• 0.01C

• 1212C

Define potential difference

• the work done, W in moving one coulomb of charge, Q from one point to another.

• the work done, W in moving one CURRENT of charge, Q from one point to another.

• the work done, W in moving one VOLTAGE of charge, V from one point to another.

The electric field strength, E produced by two parallel charged plates is

E = Vd

where E = electric field strength V = potential difference between two parallel plates

d = distance between two parallel plates. What is the SI Unit for E ?

• Vm^-1

• Nc^-1

• VC^-1

Energy transfer per unit charge is

• E.M.F

• Current

• Potential difference

• Conventional current

Current in a circuit depends on

• Resistance

• Potential difference

• Both A and B

• E.M.F

Potential difference of a battery is 2.2 V when it is connected across a resistance of 5 ohms, if suddenly the potential difference falls the 1.8 V, its internal resistance will be

• 1 ohms

• 1.1 ohms

• 2.0 ohms

• 2.1 ohms

The unit for potential difference is ____

• Ohms

• Volts

• Watts

• Amperes

Tags

NGSS.HS-PS2-5

Potential difference is acquired from the movement of a charge from

• high to low energy

• low to high energy

• positive to negative

• none of the above

Tags

NGSS.HS-PS3-1

If V = 12 V and I = 6 A, R = ?

• 18 Ohms

• 72 Ohms

• 0.5 Ohms

• 2 Ohms

What is the potential difference across a resistor of 10 ohms when a current of 2 amperes flows through it?

• 20 V

• 5 V

• 10 V

• 15 V