A p.d. of 4 V is applied to two resistors of 6 ohms and 2 ohms connected in series. Calculate : (a) the combined resistance (b) the current flowing (c) the p.d. across the 6 ohms resistor

The combines resistance can be calculated by

(a) Req = R1 + R2

= 6 + 2

= 8 ohms.

(b) The current flowing (i) can be calculated using the formula

V = iR

p.d applied to two resistors of 6 ohms and 2 ohms (V) = 4V

I = 4/8

I = 0.5A

(c) The potential difference across 6ohm (r = 6 ohms) can be calculated as

I = 0.5A

V = iR

V = 0.5 × 6

V = 3V

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