Electromagnetic Induction & Alternating Currents [BITSAT (Birla Institute of Technology & Science Admission Test) Physics]: Questions 1 - 6 of 21
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Question 1
Question MCQ▾
In a coil of self – inductance , the rate of change of current is 2 ampere per second. The emf induced in the coil is –
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. |
Question 2
Question MCQ▾
An electric lamp is connected to , supply. The peak voltage is –
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. |
Question 3
Question MCQ▾
The phenomenon of production of emf in a current carrying metallic strip on applying a magnetic field along a direction perpendicular to the direction of flow of current is known as –
Choices
Choice (4) | Response | |
---|---|---|
a. | Joule effect | |
b. | Seeback effect | |
c. | Peltier effect | |
d. | Hall effect |
Question 4
Question MCQ▾
In a transformer, the number of turns of primary coil and secondary coil are and , respectively. If is applied on the primary coil, then the ration of current in primary and secondary coil is –
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. |
Question 5
Question MCQ▾
In an A. C. circuit the potential different across an inductance and resistance joined in series are respectively and . The total potential different across the circuit is –
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. |
Question 6
Question MCQ▾
Which law follows the law of conservation of energy?
Choices
Choice (4) | Response | |
---|---|---|
a. | Maxwell՚s law | |
b. | Kirchhoff՚s law | |
c. | Lenz՚s law | |
d. | Ampere՚s law |