A torch bulb is rated at 3V and 600mA. Calculate it’s a) Power b) Resistance c) Energy consumed if it is lighted for 4 Hrs.
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Answered by
656
Given:
VOLTAGE= V= 3 VOLTS
CURRENT= I = 600 mA= 600/1000=0.6 A.
Time=4hrs=4*60*60=14400seconds
P=?
R=?
E=?
A) CALCULATE POWER:
BY USING FORMULA, P= V*I
=3 *0.6
=1.8 W
B) CALCULATE RESISTANCE:
BY USING FORMULA, V=IR
R=V/I
=3/0.6
=3*10/6
=5ohms
C) CALCULATE ENERGY:
FORMULA: E= P x t
= 1.8 x 14400
=25920 Joules.
VOLTAGE= V= 3 VOLTS
CURRENT= I = 600 mA= 600/1000=0.6 A.
Time=4hrs=4*60*60=14400seconds
P=?
R=?
E=?
A) CALCULATE POWER:
BY USING FORMULA, P= V*I
=3 *0.6
=1.8 W
B) CALCULATE RESISTANCE:
BY USING FORMULA, V=IR
R=V/I
=3/0.6
=3*10/6
=5ohms
C) CALCULATE ENERGY:
FORMULA: E= P x t
= 1.8 x 14400
=25920 Joules.
Answered by
100
only 1st part is there.. sorry for the next part answer..
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