AP EAPCET 2022 - 4th July Morning Shift | Moving Charges and Magnetism Question 23 | Physics

Two electrons, $$e_1$$ and $$e_2$$ of mass $$m$$ and charge $$q$$ are injected into the perpendicular direction of the magnetic field $$B$$ such that the kinetic energy of $$e_1$$ is double than that of $$e_2$$. The relation of their frequencies of rotation, $$f_1$$ and $$f_2$$ is

$$f_1=f_2$$

$$f_1=2 f_2$$

$$2 f_1=f_2$$

$$4 f_1=f_2$$

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 25 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

AP EAPCET 2021 - 19th August Evening Shift

MCQ (Single Correct Answer)

-0

In a co-axial, straight cable, the central conductor and the outer conductor carry equal currents in opposite directions. The magnetic field is zero

outside the cable

inside the inner conductor

inside the outer conductor

in between the two conductors

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