How many 176 ohm resistors (in parallel) are required to carry 5 A on a 220 V line?

Ohm's law provides a resistor’s equivalent resistance parallelly linked for x number of resistors of resistance 176 Ω as,

⇒ V = IR

Step 1: List the Given Data

Considering the equation as, \(R = {{V}\over I}\)

Here,

Voltage, V = 220 V
Current, I = 5A
R = Equivalent Resistance of Combination

Step 2: Calculation of the Given Data

\({{1} \over R} = x \times {{1} \over (176)}\)

R = \({{176} \over x}\)

Now, as per Ohm’s Law, we get,

\({{V} \over I} = {{176} \over x}\)

⇒ \(x = {{176 \times 5} \over 220} = 4\)

Hence, in order to draw the required amount of current, four 176 Ω resistors will be needed.

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How many 176 ohm resistors (in parallel) are required to carry 5 A on a 220 V line?

Step 1: List the Given Data

Step 2: Calculation of the Given Data

CBSE CLASS XII Related Questions

1.
Photoemission of electrons occurs from a metal (\( \phi_0 = 1.96 \, \text{eV} \)) when light of frequency \( 6.4 \times 10^{14} \, \text{Hz} \) is incident on it. Calculate: Energy of a photon in the incident light, The maximum kinetic energy of the emitted electrons, and The stopping potential.

2.
If Bohr’s quantization postulate (angular momentum \( = \frac{nh}{2\pi} \)) is a basic law of nature, it should be equally valid for the case of planetary motion also. Why, then, do we never speak of quantization of orbits of planets around the Sun? Explain.

3.
The figure shows three point charges kept at the vertices of triangle ABC. The net electric field, due to this system of charges, at the midpoint M of base BC will be:

5.
Write any two features of nuclear forces.

6.
Draw a circuit diagram of a full-wave rectifier using p-n junction diodes. Explain its working and show the input-output waveforms.

Similar Physics Concepts

Comments

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How many 176 ohm resistors (in parallel) are required to carry 5 A on a 220 V line?

Step 1: List the Given Data

Step 2: Calculation of the Given Data

CBSE CLASS XII Related Questions

1.Photoemission of electrons occurs from a metal (\( \phi_0 = 1.96 \, \text{eV} \)) when light of frequency \( 6.4 \times 10^{14} \, \text{Hz} \) is incident on it. Calculate: Energy of a photon in the incident light, The maximum kinetic energy of the emitted electrons, and The stopping potential.

2. If Bohr’s quantization postulate (angular momentum \( = \frac{nh}{2\pi} \)) is a basic law of nature, it should be equally valid for the case of planetary motion also. Why, then, do we never speak of quantization of orbits of planets around the Sun? Explain.

3.The figure shows three point charges kept at the vertices of triangle ABC. The net electric field, due to this system of charges, at the midpoint M of base BC will be:

5. Write any two features of nuclear forces.

6.Draw a circuit diagram of a full-wave rectifier using p-n junction diodes. Explain its working and show the input-output waveforms.

Similar Physics Concepts

Comments

SUBSCRIBE TO OUR NEWS LETTER

1.
Photoemission of electrons occurs from a metal (\( \phi_0 = 1.96 \, \text{eV} \)) when light of frequency \( 6.4 \times 10^{14} \, \text{Hz} \) is incident on it. Calculate: Energy of a photon in the incident light, The maximum kinetic energy of the emitted electrons, and The stopping potential.

2.
If Bohr’s quantization postulate (angular momentum \( = \frac{nh}{2\pi} \)) is a basic law of nature, it should be equally valid for the case of planetary motion also. Why, then, do we never speak of quantization of orbits of planets around the Sun? Explain.

3.
The figure shows three point charges kept at the vertices of triangle ABC. The net electric field, due to this system of charges, at the midpoint M of base BC will be:

5.
Write any two features of nuclear forces.

6.
Draw a circuit diagram of a full-wave rectifier using p-n junction diodes. Explain its working and show the input-output waveforms.