Physics
Calculate the current flowing through each of the resistors A and B in the circuit shown in figure.
Answer
(a) Given,
R = 1 Ω
V = 2 V
Current through 1 Ω = ?
From Ohm's law
V = IR
Substituting the values in the formula above, we get,
2 = I x 1
⇒ I = 2 / 1 = 2 A
Hence, current through Resistor A = 2 A
(b) Given,
R = 2 Ω
V = 2 V
Current through 2 Ω = ?
From Ohm's law
V = IR
Substituting the values in the formula above, we get,
2 = I x 2
⇒ I = 2 / 2 = 1 A
Hence, current through Resistor B = 1 A
Related Questions
In figure, calculate —
(a) the total resistance of the circuit,
(b) the value of R, and
(c) the current flowing in R
A resistor of 6 Ω is connected in series with another resistor of 4 Ω. A potential difference of 20 V is applied across the combination. Calculate (a) the current in the circuit and (b) potential difference across the 6 Ω resistor.
Two resistors of resistance 2 Ω and 3 Ω are connected in parallel to a cell to draw 0.5 A current from the cell.
(a) Draw a labelled diagram of the arrangement.
(b) Calculate the current in each resistor.
A particular resistance wire has a resistance of 3.0 ohm per meter. Find —
(a) The total resistance of three lengths of this wire each 1.5 m long, joined in parallel.
(b) The potential difference of the battery which gives a current of 2.0 A in each of the 1.5 m length when connected in parallel to the battery (assume that resistance of the battery is negligible).
(c) The resistance of 5 m length of a wire of the same material, but with twice the area of cross section.