Electric Potential and Potential Difference

Q.

Does the Voltmeter measure EMF ?

Q. There is no flow of current between two charged bodies when connected because

(a) They have same quantity of charge
(b) They have same potential
(c) They have same capacity
(d) They have the same ratio of potential per unit charge

Q.

What type of device has the value of resistance?

Q. Which of the following represents the units of current and potential difference respectively?

1. volt, ampere
2. ampere, coulomb
3. ampere, volt
4. volt, joule

Q.

Can a multi-meter be used as a voltmeter?

Q.

Potential difference is provided in an electric circuit by ______________.

1. Voltmeter

2. Bulb

3. Conductor

4. Cell or battery

Q.

A current will not flow in the absence of?

1. only potential difference

2. only Conductor

3. protons

4. both a & b

Q.

Fill in the blank

1 V = 1 __ $C^{-1}$

(in SI units)

1. A

2. V

3. J

4. I

Q. In an unbiased p-n junction, consider the following options: 1. Potential at p is more than that at n. 2. Potential at p is less than that at n. 3. Potential at p is equal to that at n. 4. Potential at p is +ve and that at n is - ve. Chose the correct option!

Q.

Name the instrument used to measure the potential difference across the circuit?

Q.

Why does electricity flow from higher potential to lower potential?and What is the potential?

Q.

A current will not flow in the absence of?

1. only potential difference

2. only Conductor

3. protons

4. both a & b

Q.

what is meant by potential difference?

Q. Potential is measured in

1. joule/coulomb
2. watt/coulomb
3. newton-second
4. none of these