alleryStart learning →A 12 V source sends 0.5 A through a resistor. What is its resistance?
A6 ohms
B12 ohms
C0.04 ohms
D24 ohms
Answer & Solution
Correct answer: D. 24 ohms
Resistance is 12 V divided by 0.5 A, which is 24 ohms.
Keep practising Electric current and its effects
Browse all Electric current and its effects questions for Olympiad (Class 7), or explore more Science topics.
Related questions
Which of these is used as a transformer insulator?The electric power delivered to homes is mostly:Aluminium is preferred for long power lines mainly because it is:Aluminium wire joints can heat up because aluminium readily forms an insulating:A flow of positive charge to the right has the same effect as an equal flow of negative chCurrent can be measured without breaking the circuit by detecting its:In a metal wire, the positively charged atomic nuclei are:In metallic solids, electric charge flows by means of: