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Q: How much work is done in moving a charge of 3 C across two points with a potential difference of 10 V?
  • A. –30 A
  • B. 30 A
  • C. –30 J
  • D. 30 J
Correct Answer: Option D - Given, Voltage (V) = 10 volt, Charge (Q ) = 3 coulomb W = ? we know that, Voltage(V)=work(W)/charge(Q) W = V.Q = 10 x 3 = 30 Joule
D. Given, Voltage (V) = 10 volt, Charge (Q ) = 3 coulomb W = ? we know that, Voltage(V)=work(W)/charge(Q) W = V.Q = 10 x 3 = 30 Joule

Explanations:

Given, Voltage (V) = 10 volt, Charge (Q ) = 3 coulomb W = ? we know that, Voltage(V)=work(W)/charge(Q) W = V.Q = 10 x 3 = 30 Joule