Advertisements
Advertisements
Question
Increasing the current passing through the wire decreases the magnetic field intensity.
Options
Right
Wrong
Advertisements
Solution
Increasing the current passing through the wire decreases the magnetic field intensity- Wrong
APPEARS IN
RELATED QUESTIONS
Draw a schematic diagram of a circuit consisting of a battery of three cells of 2 V each, a 5 Ω resistor, an 8 Ω resistor, and a 12 Ω resistor, and a plug key, all connected in series.
What do the following symbols mean in circuit diagrams?
What do the following symbols mean in circuit diagrams?
Draw circuit symbols for variable resistance
Draw circuit symbols for
A closed switch
What is a circuit diagram
Draw the labelled diagram of an electric circuit comprising of a cell, a resistance, an ammeter, a voltmeter and a closed switch (or closed plug key). Which of the two has a large resistance : an ammeter or a voltmeter?
Draw a circuit diagram to show how 3 bulbs can be lit from a battery so that 2 bulbs are controlled by the same switch the third bulb has its own switch.
Explain with the help of a labelled circuit diagram how you will find the resistance of a combination of three resistors, or resistance R1, R2 and R3, joined in parallel. Also mention how you will connect the ammeter and the voltmeter in the circuit when measuring the current in the circuit and the potential difference across one of the three resistors of the combination.
Find the odd one out and justify it.
Fuse wire, M.C.B., Rubber Gloves, Generator
Two tungsten bulbs of power 50 W and 60 W work on 220 V potential difference. If they are connected in parallel, how much current will flow in the main conductor?
Write the condition required for a circuit to be a closed circuit.
Explain the following:
Open circuit
If you touch an electric wire carrying current you get a shock, but if on the same wire the birds sit they do not get any shock/current. Explain why?
______ is the device used to close or open an electric circuit.
Draw the circuit diagram for the series connection.
Tabulate the different components of an electric circuit and their respective symbols.
Rahul wants to make an electric circuit. He has a bulb, two wires, a safety pin, and a piece of copper. He does not have any electric cell or battery. Suddenly he gets some idea. He uses lemon instead of a battery and makes a circuit. Will the bulb glow?
In which among the following circuits does the bulb glow?
In the circuit diagram below, 10 units of electric charge move past point x every second What is the current in the circuit ______.
In the circuit shown, which switches (L,M or N) must be closed to light up the bulb?
Draw the circuit diagram for the following series connection
Study the electric circuit below. Which of the following switches should be closed so that only two bulbs will light up
Study the three electric circuits below. Each of them has a glass rod (G), a steel rod (S), and a wooden rod (W).
In which of the electric circuits would the bulb not light up.
Assertion: People struck by lightning receive a severe electrical shock.
Reason: Lightning carries very high voltage.
In a simple circuit, why does the bulb glow when you close the switch?
When a circuit is open, _____ cannot pass through it.
The rate of flow of electric charges in a circuit is called ______.
In an electrical circuit two resistors of 2 Ω and 4 Ω respectively are connected in series to a 6 V battery. The heat dissipated by the 4 Ω resistor in 5 s will be
A child has drawn the electric circuit to study Ohm’s law as shown in Figure. His teacher told that the circuit diagram needs correction. Study the circuit diagram and redraw it after making all corrections.
Draw a circuit diagram of an electric circuit containing a cell, a key, an ammeter, a resistor of 2 Ω in series with a combination of two resistors (4 Ω each) in parallel and a voltmeter across the parallel combination. Will the potential difference across the 2 Ω resistor be the same as that across the parallel combination of 4 Ω resistors? Give reason.
When an electric current flows through a copper wire AB as shown in the following figure, the wire
Name the device used these days in place of electric fuses in electrical circuits.
Our body is a ______ of electricity.
Will the bulb glow in the circuit shown in the following figure? Explain.
Name the device which is used to measure the strength of the electric current in an electric circuit.
