Que 1. The rate of flow of an electric charge is known as
a) Electric Potential
b) Electric Conductance
c) Electric Current
d) None of these
Que 2. Which of the given is the SI Unit of Electric Current?
a)Ohm
b) Ampere
c) Volt
d) Faraday
Que 3. The instrument used for measuring electric current is:
a)Ammeter
b) Galvanometer
c) Voltmeter
d) Potentiometer
Que 4. The amount of work done in joules, when one unit electric charge moves from one point to another point in an electric circuit is called :
a)Electric Current
b) Electric resistance
c) Electric conductance
d) Potential difference
Que 5. The unit of potential difference is :
a)Volt
b) Ohm
c) Ampere
d) Faraday
Que 6. The relation between potential difference (V) and current (I) is :
a)V ∝ I²
b) V ∝ 1/I
c) V² ∝ I
d) V ∝ I
Que 7. The SI unit of resistance is :
a)Newton
b) Ohm
c) Watt
d) Joule
Que 8. A voltmeter is used to find potential difference in any electrical circuit, which of the statement given below is true :
a)A Voltmeter is a high resistance instrument and is connected in series circuit.
b) A Voltmeter is a low resistance instrument and is connected in series circuit.
c) A Voltmeter is a high resistance instrument and is connected in parallel circuit.
d) A Voltmeter is a low resistance instrument and is connected in series circuit.
Que 9. A battery of 12 volt is connected in series with register of 0.2 ohm,0.3 ohm, 0.4 ohm, 0.5 ohm and 12 ohm. How much current would flow through the 0.3 ohm register ?
a)0.895 A
b) 1.11 A
c) 0.5 A
d) None of these
Que 10. On which of the given resistance does not depend :
a)Length of conductor
b) Area of cross-section
c) Temperature
d) Density
Que 11. If length of a conductor and it’s radius is increased twice, how the resistance will change?
a) Resistance will remain unchanged
b) Resistance increase twice
c) Resistance will become half
d) Resistance will increase 4 times
Que 12. The potential difference applied is directly proportional to current only if
a) Always
b) Never
c) Sometimes
d) When temperature is constant
Que 13. Equivalent resistance of 4, 4Ω resistance in parallel is
a)4Ω
b) 1Ω
c) 2Ω
d) 16Ω
Que 14. There is wire of length L and cross section A. Which of the given have least resistance?
a) Length doubled, Area halved
b) Length tripled, Area doubled
c) Length halved, Area doubled
d) The original wire
Que 15. On which of the following parameters specific resistance depends?
a) length of wire
b) area of wire
c) current passing through it
d) temperature
Que 16. A resistor of length L is connected to a battery and current I is given through it. If it is divided into 3 parts by length and all having the same cross sectional area are connected in series with the same battery, the current flowing through them will be?
a)I/3
b) 3I
c) I
d) 3I/2
Que 17. Two resistances R1 and R2 are connected with a cell in parallel. Find the ratio of current flowing through R1 to the current flowing through R2
a)R1:R2
b) R2: R1
c) 1.01
d) Data not sufficient
Que 18. Which of the given statement is true regarding ametre and voltmeter?
a) Ammeter is connected in series with the required device, Voltmeter in parallel.
b) Both ammeter and voltmeter are connected in series with required device.
c) The voltmeter is connected in series with the device, Ammeter in parallel
d) They can be connected in any way
Que 19. Amount of energy delivered by a power of one kilowatt in one hour is called…….
a) Kilogram-second
b) Kilowatt-second
c) Watt-hour
d) Kilowatt-hour
Que 20. In SI unit, JC-1 is equal to
a) Volt
b) Newton’s Law
c) Pascal
d) Omega
Que 21. At a given time, a house is supplied with 100 ampere at 220 volt. How many 75W, 220V light bulbs could be switched on in the house at the same time (if they are connected in parallel)?
a) 93
b) 193
c) 293
d) 393