Arectangular loop with dimensions 4.20 cm by 9.50 cm carries current i. the current in the loop produces a magnetic field at the center of the loop that has magnitude 3.10×10−5 t and direction away from you as you view the plane of the loop. part a what is the magnitude of the current in the loop?

I=1.48 A

Explanation:

Given that

B=3.1 x 10⁻5 T

b= 4.2 cm

l= 9.5 cm

The relationship for magnetic field  and current given as

Where

By putting the values

D=26.03 m⁻¹

I=1.48 A

5 w for 1hr = 5x60x60 joules=300x60=3000x6=18,000j as total energy conversion. efficiency of bulb needed for radiant to thermal within 18000

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