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olchik [2.2K]
4 years ago
15

A horizontal rod 0.250 m long is mounted on a balance and carries a current. At the location of the rod a uniform horizontal mag

netic field has a magnitude of 6.10×10−2 T and direction perpendicular to the rod. The magnetic force on the rod is measured by the balance and is found to be 0.120 N . What is the current?
Physics
1 answer:
Karo-lina-s [1.5K]4 years ago
7 0

Answer:

The current is 7.87 A.

Explanation:

Given that,

Length = 0.250 m

Magnetic field B= 6.10\times10^{-2}\ T

Magnetic force = 0.120 N

We need to calculate the current

Using formula of magnetic force

F=BIL

I=\dfrac{F}{BL}

Where, B = magnetic field

I = current

l = length

F = force

Put the value into the formula

I=\dfrac{0.120}{6.10\times10^{-2}\times0.250}

I=7.87\ A

Hence, The current is 7.87 A.

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