Advertisements
Advertisements
प्रश्न
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
- the current in the circuit and
- the potential difference across the 6 Ω resistor.
संख्यात्मक
उत्तर
Total resistance in series R = 6 + 4 = 10 Ω
V = 20 V
- ∴ I = `"V"/"R"`
= `20/10`
= 2 A - potential difference across 6 Ω is V = IR
V = 2 × 6
V = 12 V
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
APPEARS IN
संबंधित प्रश्न
Umesh has two bulbs having resistances of 15Ω and 30Ω. He wants to connect them in a circuit, but if he connects them one at a time the filament gets burnt. Answer the following.
- Which method should he use to connect the bulbs?
- What are the characteristics of this way of connecting the bulbs depending on the answer of A above?
- What will be the effective resistance in the above circuit?
The resistance of a conductor of length x is r. If its area of cross-section is a, what is its resistivity? What is its unit?