Three resistors of 6 Ω each are joined in parallel and the combination is connected across a 12 V battery of negligible internal resistance. Find the current drawn.
Current Electricity
Original Khojo Papers practice question — not from a past board paper.
Current 0.5 A and terminal potential difference 1.75 V.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
I = E/(R + r) = 2 ÷ 4 = 0.5 A, and the terminal potential difference is IR = 0.5 × 3.5 = 1.75 V.
From the same topic and chapter, at a similar level.
Three resistors of 6 Ω each are joined in parallel and the combination is connected across a 12 V battery of negligible internal resistance. Find the current drawn.
Current Electricity
State the principle of a Wheatstone bridge and the condition for balance.
Current Electricity
What is drift velocity, and how is it related to the current in a conductor?
Current Electricity
State the principle of a potentiometer and one advantage it has over a voltmeter.
Current Electricity
State Kirchhoff's two laws and say what conservation principle each expresses.
Current Electricity
How does the resistivity of a metal and of a semiconductor change with temperature, and why?
Current Electricity