मराठी

Calculate the current flowing through a wire of resistance 5 Ω connected to a battery of potential difference 3 V.

Advertisements
Advertisements

प्रश्न

Calculate the current flowing through a wire of resistance 5 Ω connected to a battery of potential difference 3 V.

संख्यात्मक
Advertisements

उत्तर

Potential Difference/Voltage (V) = 3 V

Resistance (R) = 5Ω

Current (I) = ?

According to Ohm's Law:

V = IR

Then I = `"V"/"R"`

I = `3/5`

= 0.6 A

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 8: Current Electricity - EXERCISE - 8(A) [पृष्ठ १८७]

APPEARS IN

सेलिना Physics [English] Class 10 ICSE
पाठ 8 Current Electricity
EXERCISE - 8(A) | Q 6. | पृष्ठ १८७

संबंधित प्रश्‍न

What will be the change in the current if the potential difference is kept constant and the resistance of the circuit is made four times?

  1. It will remain unchanged.
  2. It will become four times.
  3. It will become one-fourth.
  4. It will become half.

Graph showing the variation of current versus voltage for a material Ga As is shown in the figure. Identify the region of
(i) negative resistance

(ii) where Ohm's law is obeyed.


When a 12 V battery is connected across an unknown resistor, there is a current of 2.5 mA in the circuit. Find the value of the resistance of the resistor.


A low voltage supply from which one needs high currents must have very low internal resistance. Why?


An electrical bulb is marked 200V, 100W. Calculate the electrical resistance of its filament. If five such
bulbs are connected in series to a 200V supply, how much current will flow through them?


State the relation correlating the electric current flowing in a conductor and the voltage applied across it. Also, draw a graph to show this relationship.


Explain the equivalent resistance of a series resistor network.


Explain the equivalent resistance of a parallel resistor network.


The resistance of a nichrome wire at 0°C is 10Ω. If its temperature coefficient of resistivity of nichrome is 0.004/ °C, find its resistance of the wire at boiling point of water. Comment on the result.


Two cells of same emf E but internal resistance r1 and r2 are connected in series to an external resistor R (Figure). What should be the value of R so that the potential difference across the terminals of the first cell becomes zero.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×