Current Electricity

Q: A thermistor is a resistor which is:

(a) :  Light sensitive
(b) :  Heat sensitive
(c) :  Sound sensitive
(d) :  All of these
(e) :  None of these
Answer:  Heat sensitive
Explanation:  

Q: the voltmeter usually contain

(a) :  water only
(b) :  dilute solution of CuSO₄
(c) :  CuSO₄ in solid form
(d) :  phosphorus
(e) :  none of these
Answer:  dilute solution of CuSO₄
Explanation:  

Q: When the current is being drawn from the battery:

(a) :  V = E - lr is applied
(b) :  V = E + Ir is applied
(c) :  It is being discharged
(d) :  Both (A) and (C)
(e) :  Both (B) and (C)
Answer:  Both (A) and (C)
Explanation:  

Q: SI unit of current describes the flow of charge at the rate of

(a) :  one ampere per second
(b) :  one coloumb per second
(c) :  one electron per second
(d) :  6.24*10¹⁸ electrons per second
(e) :  both B and D
Answer:  both B and D
Explanation:  

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