Free Current Electricity MCQs with Answers
1,052 Current Electricity MCQs from Physics, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Steady current relates charge flow to potential difference, resistance and resistivity, including how temperature changes a conductor's resistance. Sources with internal resistance have terminal voltage below their emf when delivering current, and maximum power output occurs under a specific load condition rather than at zero resistance.
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1,052 questions · page 19 of 53
- A. P = I²R
- B. P = V²/R
- C. P = IV
- D. All of above
Explanation: Explanation for this question will be added soon
Correct answer: All of above- A. E = Q/W
- B. E = W/Q²
- C. E = W/Q
- D. E = W/t
Explanation: Explanation for this question will be added soon
Correct answer: E = W/Q- A. Resistance
- B. Potential
- C. Charge
- D. Inductance
Explanation: Explanation for this question will be added soon
Correct answer: Charge- A. Aluminum
- B. Germanium
- C. Carbon
- D. None of above
Explanation: Explanation for this question will be added soon
Correct answer: Aluminum- A. Decreases
- B. Increases
- C. Remains unchanged
- D. First decrease then increase
Explanation: Explanation for this question will be added soon
Correct answer: Increases- A. Nichrome
- B. Manganin
- C. Copper
- D. None of the above
Explanation: Explanation for this question will be added soon
Correct answer: Copper- A. 11/12 Ω
- B. 12/11 Ω
- C. 12 Ω
- D. 0 Ω
Explanation: Explanation for this question will be added soon
Correct answer: 12/11 Ω- A. R1R2/ R1+ R2
- B. R1+ R2/ R1R2
- C. R1 + R2
- D. R2 - R1
Explanation: Explanation for this question will be added soon
Correct answer: R1R2/ R1+ R2- A. Increase in mass of electron
- B. Decrease of electron density
- C. The decrease of relaxation time
- D. None of above
Explanation: Explanation for this question will be added soon
Correct answer: The decrease of relaxation time- A. Greater than sum of three resistances
- B. Equal to sum of three resistances
- C. Less than the sum of three resistances
- D. None of the above
Explanation: Explanation for this question will be added soon
Correct answer: Less than the sum of three resistances- A. Area of cross section
- B. Mass
- C. Length
- D. None of the above
Explanation: Explanation for this question will be added soon
Correct answer: Length372. There are three equal resistances. How many different combination of these resistances are possible:
- A. Six
- B. Three
- C. One
- D. Four
Explanation: The three equal resistances can be combined in four different ways: all in series, all in parallel, two in series with one in parallel…
Correct answer: Four- A. e.m.f
- B. Resistances
- C. Capacitance
- D. Potential difference
Explanation: Explanation for this question will be added soon
Correct answer: e.m.f- A. Copper
- B. Silver
- C. Carbon
- D. None of these
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Correct answer: Carbon- A. 80 Ω
- B. 70 Ω
- C. 150 Ω
- D. 120 Ω
Explanation: Explanation for this question will be added soon
Correct answer: 120 Ω- A. 0.5 Ω
- B. 0.4 Ω
- C. 0.3 Ω
- D. 0.2 Ω
Explanation: Explanation for this question will be added soon
Correct answer: 0.5 Ω- A. Volt x Metre
- B. Volt/Amp
- C. Volt/Metre
- D. Volt/Amp²
Explanation: Explanation for this question will be added soon
Correct answer: Volt/Metre- A. Only on current flowing in the wire
- B. Only on resistance per unit length of wire
- C. On the current following in the wire and resistance per unit length of wire
- D. None of above
Explanation: Explanation for this question will be added soon
Correct answer: On the current following in the wire and resistance per unit length of wire- A. J/C
- B. A/Ω
- C. A
- D. N/C
Explanation: Explanation for this question will be added soon
Correct answer: J/C- A. Electrolyte used in cell
- B. The electrodes of the cell
- C. The vessel of the cell
- D. None of above
Explanation: Explanation for this question will be added soon
Correct answer: Electrolyte used in cell