Which of the following statements is true about ohmic conductors? (i) The graph of current versus vo

Question

Which of the following statements is true about ohmic conductors?
(i) The graph of current versus voltage for an ohmic conductor is a straight line
(ii) The resistance can change depending on the direction of the current flow
(iii) The current through an ohmic conductor is directly proportional to the voltage across the conductor
(iv) The resistance of an ohmic conductor is constant

Answer 1

Which of the following statements is true about ohmic conductors?
(i) The graph of current versus voltage for an ohmic conductor is a straight line
(ii) The resistance can change depending on the direction of the current flow
(iii) The current through an ohmic conductor is directly proportional to the voltage across the conductor
(iv) The resistance of an ohmic conductor is constant

(i), (ii) and (iv) only
(i), (iii) and (iv) only ✓
(i) and (ii) only
(ii) and (iii) only

Explanation

This physics concept involves analyzing the given values and applying relevant formulas. Work through the problem step by step using known equations and constants.

Identify what quantity needs to be found and which formula connects the given information to the answer. Substitute the values carefully, paying attention to units.

Check that your calculated answer matches one of the options provided. Understanding the underlying principle helps verify the solution makes physical sense.