Physics
Grade-9
Easy

Question

Four resistors of 100 Ω each are connected in series across a battery of 500 V. What is the amount of current in the circuit?

  1. 1.25 A
  2. 200000 A
  3. 1/ 200000 A
  4. 20 A

hintHint:

Ohm's law states that the voltage in a conductor is directly proportional to the current through it.
i.e. V=IR

The correct answer is: 1.25 A


    When four resistors of 100 Ω each are connected in series across a battery of 500 V, the current in the circuit is 1.25 A.
    • If the current of 500 V is applied to four resistors, each bears 125 V current.
    • The resistance in each resistor is 100 Ω. (RT= R+ R+ R+ R= 400 Ω)
    • Applying Ohm's law, the current I= V/R is 500/400= 1.25 A

    Related Questions to study

    Grade-9
    Physics

    Four unequal resistors are connected in parallel with each other. Which one of the following statements is correct about this combination?

    Four unequal resistors are connected in parallel with each other. Which one of the following statements is correct about this combination?

    PhysicsGrade-9
    Grade-9
    Physics

    Four unequal resistors are connected in series with each other. Which one of the following statements is correct about this combination?

    Four unequal resistors are connected in series with each other. Which one of the following statements is correct about this combination?

    PhysicsGrade-9
    Grade-9
    Physics

    In parallel combination of resistors, the amount of current in the circuit

    In parallel combination of resistors, the amount of current in the circuit

    PhysicsGrade-9
    parallel
    Grade-9
    Physics

    In a series combination of resistors, the amount of current in the circuit

    In a series combination of resistors, the amount of current in the circuit

    PhysicsGrade-9
    Grade-9
    Physics

    Equivalent resistance of the resistors connected in series is __________ individual resistances in the circuit.

    Equivalent resistance of the resistors connected in series is __________ individual resistances in the circuit.

    PhysicsGrade-9
    Grade-9
    Physics

    Magnitude of current across each resistor in a series combination

    Magnitude of current across each resistor in a series combination

    PhysicsGrade-9
    parallel
    Grade-9
    Physics

    In a series circuit, the total resistance is greater than the largest resistance in the circuit.

    In a series circuit, the total resistance is greater than the largest resistance in the circuit.

    PhysicsGrade-9
    Grade-9
    Physics

    Pick out the correct statement from the following about the parallel combination of resistors.

    Pick out the correct statement from the following about the parallel combination of resistors.

    PhysicsGrade-9
    Grade-9
    Physics

    The equivalent overall resistance is smaller than the smallest parallel resistor in a parallel connection. This statement is ____.

    The equivalent overall resistance is smaller than the smallest parallel resistor in a parallel connection. This statement is ____.

    PhysicsGrade-9
    parallel
    Grade-9
    Physics

    What is the equivalent resistance of a series combination of three resistors?

    What is the equivalent resistance of a series combination of three resistors?

    PhysicsGrade-9
    Grade-9
    Physics

    An electrician installs patio lights in a back yard. Which of the following will increase the efficiency of the wiring system to the back yard?
    1-     Bury the extension cord deep underground.
    2-     Use a shorter extension cord.
    3-     Use a longer extension cord.
    4-     Use compact fluorescent patio lights

    An electrician installs patio lights in a back yard. Which of the following will increase the efficiency of the wiring system to the back yard?
    1-     Bury the extension cord deep underground.
    2-     Use a shorter extension cord.
    3-     Use a longer extension cord.
    4-     Use compact fluorescent patio lights

    PhysicsGrade-9
    Grade-9
    Physics

    In a series connection of resistors, what happens to the current across each resistor?

    In a series connection of resistors, what happens to the current across each resistor?

    PhysicsGrade-9
    parallel
    Grade-9
    Physics

    30 Joules of energy enter a light bulb. 20 joules of energy are transformed into light, how much energy is dissipated as heat?

    30 Joules of energy enter a light bulb. 20 joules of energy are transformed into light, how much energy is dissipated as heat?

    PhysicsGrade-9
    Grade-9
    Physics

    The total resistance in a circuit is equal to the sum of the inverse of each individual resistance.

    The total resistance in a circuit is equal to the sum of the inverse of each individual resistance.

    PhysicsGrade-9
    Grade-9
    Physics

    Total resistance is the algebraic sum of the resistance across each resistor in

    Total resistance is the algebraic sum of the resistance across each resistor in

    PhysicsGrade-9
    parallel

    card img

    With Turito Academy.

    card img

    With Turito Foundation.

    card img

    Get an Expert Advice From Turito.

    Turito Academy

    card img

    With Turito Academy.

    Test Prep

    card img

    With Turito Foundation.