A square wire, 20 cm on the side, moves at constant speed parallel to the xy-plane into a region where there is a uniform magnetic field = (0.1 T) .The induced electric current …

Question

asked Dec 22, 2020 108k views

1 Answer

Element Zero · Answer 1 · 2020-12-28T07:47:34+0000

Answer:

The speed of the wire is 5 m/s.

Step-by-step explanation:

Given that,

Length = 20 cm

Magnetic field = 0.1 T

Current = 10 mA

Resistance
$R= 10\Omega$

We need to calculate the speed of the wire

Using formula of emf

$\epsilon=Bvl$

Using formula of current

$I=(\epsilon)/(R)$

Put the value of
$\epsilon$ into the formula of current

I=(Bvl)/(R)

v=(IR)/(Bl)

v=(10*10^(-3)*10)/(0.1*20*10^(-2))

$v= 5\ m/s$

Hence, The speed of the wire is 5 m/s.