Question

In an electrical circuit two resistors of 2 Ω and 4 Ω respectively are connected in series to a 6 V battery. The heat dissipated by the 4 Ω resistor in 5 s will be [NCERT Exemplar Problems]
(a) 5 J
(b) 10 J
(c) 20 J
(d) 30 J

Answer 1

Answer:

Explanation:

R1=2 OHMS

R2=4 OHMS

IN SERIES CONNECTION,

R NET=R1+R2=2+4=6 OHMS.

VOLTAGE APPLIED= 6 VOLT

WE KNOW,

V=IR

6=I*6

CURRENT =1A

HEAT DISSIPATED BY 4 OHM RISITOR IN 5 SECONDS,

H=I²RT

H=1*4*5

H=20J.

HOPE IT HELPS.

Answer 2

Answer:

Answer:i. think your answer is 20J