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Electromagnetic Induction & Alternating Currents [AIIMS (All India Institute of Medical Sciences) Physics]: Questions 1 - 4 of 51
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Question 1
Appeared in Year: 1997
Question MCQ▾
A coil of copper having 1000 turns is placed in a magnetic field perpendicular to its plane. The cross sectional area of the coil is 0.05 m2. If it turns through 180° in 0.01 sec, then the induced emf in the coil is – [AIIMS]
Choices
Choice (4) | Response | |
---|---|---|
a. | 0.2 V | |
b. | 40 V | |
c. | 0.4 V | |
d. | 4 V |
Question 2
Appeared in Year: 1997
Question MCQ▾
A choke coil should have – [AIIMS 1999]
Choices
Choice (4) | Response | |
---|---|---|
a. | High resistance and high inductance | |
b. | High resistance and low inductance | |
c. | Low resistance and high inductance | |
d. | Low inductance and low resistance |
Question 3
Appeared in Year: 2005
Question MCQ▾
A conducting ring of radius 1 meter is placed in a uniform magnetic field B of 0.01 T, oscillating with frequency 100 Hz with its plane at right angles to magnetic field. What will be the induced electric field? [AIIMS]
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. |
Question 4
Appeared in Year: 2006
Question MCQ▾
A metallic ring is dropped down, keeping its plane perpendicular to a constant and horizontal magnetic field. The ring enters the region of magnetic field at t = 0 and completely emerges out at t = T sec. The current in the ring varies as – [AIIMS]
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. |