100 J of heat is produced each second in a 4 resistance. Find the potential
difference across the resistor.
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Answered by
15
we knew that
H = I^2*R*T
100 /4 = I ^ 2
square rooting on both sides
10/2 = I
I = 5 A
by ohms law
V = I × R
5*4
= 20volts
Answered by
4
ᴡᴇ ᴋɴᴏᴡ ᴛʜᴀᴛ,
ʜᴇᴀᴛ = ᴠ^2 × ᴛ / ʀ
100ᴊ = ᴠ^2 × 1sᴇᴄ. / 4ᴏʜᴍ
ᴠ^2 = 100ᴊ × 4ᴏʜᴍ / 1sᴇᴄ.
ᴠ^2 = 400
ᴠ = ✓400
ᴠ = 20ᴠ
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