Class 11 Physics · Chapter 9 · Test 2
Electric Potential and Charges
36 MCQs This test covers electric potential and potential difference, potential gradient, the relation E = -dV/dx, and the electron volt with numericals. It also covers motion of charged particles in a uniform field, the parabolic path, and shielding by a Faraday cage with its applications.
36 questions · 30 min · 36 marks
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Sample questions
The first 5 of 36. Try each one, then tap to see the answer.
Question 1
The potential difference between two points in an electric field is the work done in carrying a:
- AUnit positive charge from one point to the other in equilibrium
- BUnit mass between them
- CUnit negative charge only
- DProton at constant speed only
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Answer: A
V_B - V_A = W/q for a unit positive charge moved in equilibrium.
Question 2
One volt is equal to:
- AOne coulomb per joule
- BOne newton per coulomb
- COne joule per coulomb
- DOne joule per second
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Answer: C
1 V = 1 J / 1 C.
Question 3
The electric potential at a point is usually measured relative to a point at:
- AThe negative plate
- BInfinity
- CThe charge itself
- DThe earth's core
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Answer: B
Zero potential is conventionally assigned at infinity.
Question 4
The potential at a point is the work done in bringing a unit positive charge from:
- AThe point to infinity only
- BThe negative plate
- CZero distance
- DInfinity to that point
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Answer: D
It is the work per unit charge to bring a positive charge from infinity.
Question 5
The change in electric potential energy and potential difference are related by:
- ADelta U = q Delta V
- BDelta U = Delta V / q
- CDelta U = q / Delta V
- DDelta U = q + Delta V
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Answer: A
Delta U = q Delta V.
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