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How much charge is represented by 4,600 electrons?
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Find the currents l1, l2, and l3 in the circuit shown in figure below.
Date posted: May 11, 2021 . Answers (1)
Find the current I in the circuit of the figure below.
The terminal p.d of a battery is 12 V when an external resistance of 20 Ω is connected and 13.5 V when an external resistance of 45 Ω is connected. Calculate the emf and internal resistance of the battery.
A battery of emf 40 V and internal resistance 5 Ω is connected to a resistance of 15 Ω.Calculate the terminal p.d.
A cell of unknown emf E and internal resistance 2 Ω is connected to a 5 Ω resistance. If the terminal p.d V is 1.0 V, calculate E.
Explain the difference between load resistance in a circuit and internal resistance in a battery.
Four resistors are connected as shown in figure below.(a) Find the equivalent resistance between points a and c.(b) What is the current in each resistor if a potential difference of 42 V is maintained between a and c ?
Consider five resistors connected as shown in figure below. Find the equivalent resistance between points a and b.
Define current density and show how it is related to drift velocity.