Define one ohm. A resistance of 6 ohms is connected in series with another resistance of 4 ohms.
A potential difference of 20 volts is applied across the combination.
Calculate the current through the circuit and potential difference across the 6 ohm resistance. [5 MARKS]

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Solution

Definition: 1 Mark
Problem: 4 Marks

1. For one volt potential difference across a conductor, if current flowing is 1 Ampere resistance of the conductor is 1 ohm.

2.
We use proper symbols for electrical components

Resistance are shown connected in series, with 20 V battery across its positive and negative terminals. Direction of current flow is also shown from positive terminal of the battery towards its negative terminal.

Potential difference, V = 20 V

Potential difference across $6 Ω$

$V_{1} = ?$ (to be calculated)

Total circuit resistance $= 10 Ω$

From Ohm's law, $R_{s} = \frac{V}{R_{s}}$

Circuit current, I = 2 ampere or (2A)

Putting values, we get, $V_{1} = 2 \times 6 = 12 v o l t s$

Potential difference across $6 Ω$ resistance = 12 V

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Define one ohm. A resistance of 6 ohms is connected in series with another resistance of 4 ohms. A potential difference of 20 volts is applied across the combination. Calculate the current through the circuit and potential difference across the 6 ohm resistance. [5 MARKS]

Define one ohm. A resistance of 6 ohms is connected in series with another resistance of 4 ohms.
A potential difference of 20 volts is applied across the combination.
Calculate the current through the circuit and potential difference across the 6 ohm resistance. [5 MARKS]