Question

A car travels northward at 75 km/h along a straight road in a region where the Earth's magnetic field has a at a specified angle component of 0.50 x 10-4 T perpendicular to Earth's surface directed upward. What is the emf induced between the left and right side of the car, separated by 1.7 m? a) E = 6.4 m V b) = 0 V c) E= 1.8 mV d) E = 3.6 mV

Answer 1

Answer:

The emf induced between the left and right side of the car is 1.8 mV.

(c) is correct option

Explanation:

Given that,

Velocity of car =75 km/h

Magnetic field $B=0.50\times10^{-4}\ T$

Distance = 1.7 m

We need to calculate the induced emf

Using formula of emf

$\epsilon =Bvl$

Where, B = magnetic field

v = velocity

l = length

Put the value into the formula

$\epsilon =0.50\times10^{-4}\times75\times\dfrac{5}{18}\times1.7$

$\epsilon =0.0018= 1.8\ mV$

Hence, The emf induced between the left and right side of the car is 1.8 mV.