Advertisements
Advertisements
प्रश्न
Three resistors are connected to a 12 V battery as shown in the figure given below:
(i) What is the current through the 8 ohm resistor?
(ii) What is the potential difference across the parallel combination of 6 ohm and 12 ohm resistor?
(iii) What is the current through the 6 ohm resistor?
Advertisements
उत्तर
(i) 6 ohm and 12 ohm are connected in parallel, So
⇒ `1/"R"_1 = 1/6 + 1/12 = (2 + 1)/12 = 3/12`
⇒ `1/"R"_1 = 1/4`
R1 = 4 ohm.
∴ Total Resistance R = 8 + 4 = 12 ohm.
Now ∵ V = IR
⇒ 12 = I × 12
∴ I = 1 Amp.
(ii) V = IR = 1 ×4 = 4 Volt
(iii) ∵ V = I1R
⇒ 4 = I1 × 6
∴ I1 = `4/6`
= 0.66 Amp.
APPEARS IN
संबंधित प्रश्न
What is a voltmeter?
Define the unit of resistance (or Define the unit "ohm").
The values of potential difference V applies across a resistor and the corresponding values of current I flowing in the resistor are given below:
| Potential differences, V (in volts) | : | 2.5 | 5.0 | 10.0 | 15.0 | 20.0 | 25.0 |
| Current, I (in amperes) | : | 0.1 | 0.2 | 0.4 | 0.6 | 0.8 | 1.0 |
A current of 200 mA flows through a 4 kΩ resistor. What is the p.d. across the resistor?
A current of 100 mA. flows through a wire. The charge on an electron is 1.6 × 10-19 C. Find the number of electrons passing per second through the cross-section of the conductor.
If P and V are the power and potential of device, the power consumed with a supply potential V1 is:
100 J of heat is produced each second in a 4 Ω resistor. The potential difference across the resistor will be:
Find out the following in the electric circuit given in Figure
- Effective resistance of two 8 Ω resistors in the combination
- Current flowing through 4 Ω resistor
- Potential difference across 4 Ω resistance
- Power dissipated in 4 Ω resistor
- Difference in ammeter readings, if any.
An electric charge always flows from a point at a ______ to a point at a ______.
Study the following circuit and find:
- Effective resistance of the circuit
- Current drawn from the battery
- Potential difference across the 5 omega resistor
