Question

Current of 2.5+0.5A with potential difference 20+1V.
calculate resistance

Answer 1

Answer:

7 ohms

Explanation:

Given:

Current = I = 2.5+0.5 = 3 Amperes

Potential difference = v = 20+1 = 21 Volts

To find:

• Resistance in the circuit if the current is 3 Amperes and potential difference is 21 volts

Using the ohms law:

V=I×R

21=3×R

R=21/3

R=7Ω

The resistance prevalent in the circuit is equal to 7 ohms

More:

• resistance of series combination = R1+R2
• Resistance of parallel combination = 1/equivalent resistance = 1/R1+1/R2
• Coulombs law = q=i×t

Answer 2

Given ,

Current (I) = 2.5 + 0.5 = 3 amp

Potential difference (v) = 20 + 1 = 21 Volt

As we know that , the relationship between current and potential difference is given by

$\boxed{ \sf{V = IR}}$

Where , R = resistance

Thus ,

21 = 3 × R

R = 21/3

R = 7 Ohm

★ The magnitude of resistance is 7 ohm