Home › Karnataka SSLC (Class 10) › Science › Electricity › Ohm's law states that at constant temperature th…
Ohm's law states that at constant temperature the current through a conductor is
Adirectly proportional to the voltage across it
Binversely proportional to the voltage
Cindependent of the voltage
Dproportional to the square of the voltage
Answer & Solution
Correct answer: A. directly proportional to the voltage across it
1. Ohm found V ∝ I at constant temperature, so V = IR.
2. Rearranged, I = V/R, i.e. current is **directly proportional to the applied voltage**.
3. The V–I graph is a straight line through the origin.
_Source: Karnataka SSLC (KSEEB) Class 10 Science, Ch12 'Electricity', §12.3 (Ohm's law)_
Related questions
If the resistance of a component is kept constant and the voltage across it is doubled, thDomestic electrical appliances are connected in parallel rather than in series mainly becaThe commercial unit of electrical energy, '1 unit', isA potential difference of 12 V is applied across a $4\ \Omega$ resistor. The current throuJoule's law of heating states that the heat produced in a resistor isThe electric power dissipated in a resistor can be written asTwo resistors, each of resistance $R$, are connected in parallel. Their equivalent resistaFor resistors in parallel, the reciprocal of the equivalent resistance equals