AP EAPCET 2021 - 20th August Evening Shift | Moving Charges and Magnetism Question 45 | Physics

Torque required to hold a small circular coil of 10 turns, area of $$2 \times 10^{-4} \mathrm{~m}^2$$ area of carrying 0.5 A current in the middle of a long solenoid of $$10^3$$ turns per metre carrying $$3 \mathrm{~A}$$ current, with its axis perpendicular to the axis of the solenoid is

$$12 \pi \times 10^{-7} \mathrm{Nm}$$

$$6 \pi \times 10^{-7} \mathrm{Nm}$$

$$4 \pi \times 10^{-7} \mathrm{Nm}$$

$$2 \pi \times 10^{-7} \mathrm{Nm}$$

AP EAPCET 2021 - 20th August Evening Shift

MCQ (Single Correct Answer)

-0

Two concentric coils each of radius equal to $$4 \pi ~\mathrm{cm}$$ are placed at right angles to each other. If $$10 \mathrm{~A}$$ and $$24 \mathrm{~A}$$ are the currents flowing through the coils respectively, then the magnetic induction at the centre of the coils will be

$$13 \times 10^{-5} \mathrm{~T}$$

$$12 \times 10^{-5} \mathrm{~T}$$

$$7 \times 10^{-5} \mathrm{~T}$$

$$5 \times 10^{-5} \mathrm{~T}$$

AP EAPCET 2021 - 20th August Morning Shift

MCQ (Single Correct Answer)

-0

A wire of length $$L$$ metre carrying a current $$I$$ ampere is bent in the form of a circle. Magnitude of its magnetic moment is

$$\frac{L^2 I^2}{4 \pi}$$

$$\frac{L^2 I}{4 \pi}$$

$$\frac{L I}{4 \pi}$$

$$\frac{L I^2}{4 \pi}$$

AP EAPCET 2021 - 20th August Morning Shift

MCQ (Single Correct Answer)

-0

What is the net force on the square coil?

AP EAPCET 2021 - 20th August Morning Shift Physics - Moving Charges and Magnetism Question 48 English

25 $$\times$$ 10$$^{-7}$$ N moving towards wire

25 $$\times$$ 10$$^{-7}$$ N moving away from wire

35 $$\times$$ 10$$^{-7}$$ N moving towards wire

35 $$\times$$ 10$$^{-7}$$ N moving away from wire

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