Question

please answer the question​

Answer 1

V=i× R , V=2.5volt, i = 750mA(750×10^-3) , R= 2.5×1000/750, R=3.34 ohm, Power=V ×i , power= 2.5×750×10^-3 , power is 1.875watt, energy is power×time , energy= 1.875×4×60×60 after solving it energy is 27000joule

Answer 2

GIVEN:

V=2.5 volt

I =750 mA

t=4 hours

TO FIND :

1. power
2. resistance
3. energy consumed

FORMULA:

$p = v \times i$

$v = i \times r$

$energy = power \times time$

SOLUTION:

(1) P =V I

P =2.5 ×0.75

P=1.875 watt

(2)R =V/I

R =2.5/0.75

R =3.33 ohm

(3) energy = power ×time

=1.875×4

energy = 7.5 J