Physics Questions Practice Question and Answer
3 Q: Which scientist suggested that the magnet must exert an equal and opposite force on the current-carrying conductor?
627 064c24b4aa919c8488e0dbe6a
64c24b4aa919c8488e0dbe6a- 1Michael Faradayfalse
- 2Andre Marie Amperetrue
- 3Joseph Henryfalse
- 4William Gilbertfalse
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Answer : 2. "Andre Marie Ampere "
Explanation :
1. French scientist Andre-Marie Ampère suggested that a magnet should also exert an equal and opposite force on a current-carrying conductor.
2. A current-carrying wire has its own magnetic field.
3. A current-carrying wire attracts a magnetic material like a normal bar magnet.
4. When the current is withdrawn or the switch is closed, there is no magnetic effect in that case.
5. This phenomenon was called the magnetic effect of current.
Q: In which year did Albert Einstein predict a new state of matter, the Bose-Einstein condensate (BEC), based on a quantum formulation by the Indian physicist Satyendra Nath Bose?
560 064c38ae6bd3d254806859ebd
64c38ae6bd3d254806859ebd- 11935false
- 21924true
- 31930false
- 41919false
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Answer : 2. "1924"
Explanation :
1. In which year did Albert Einstein predict a new state of matter, Bose-Einstein condensate (BEC) in 1924, based on the quantum formulation given by Indian physicist Satyendra Nath Bose?
2. Bose–Einstein condensate (BEC) is a state of matter in which a group of boson particles are in the same quantum state.
Q: A light bulb working on an 18 V battery draws a current of 3 A. What will be the resistance of the bulb?
1006 064c3967e29beb3482a3bcc75
64c3967e29beb3482a3bcc75- 16 Ωtrue
- 22 Ωfalse
- 34 Ωfalse
- 43 Ωfalse
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Answer : 1. "6 Ω"
Explanation :
An electric bulb running on 18 V battery draws 3A of electric current. The resistance of the bulb will be 6 Ω.