The given symbol stands for a/an _________ in an electric circuit.
electric bulb
The correct answer is electric bulb.
Key Points
- Electric bulb
- An electric bulb is connected to the circuit.
- It glows as the current passes through the circuit.
- However, it cannot detect very small currents.
Additional Information
- Tungsten: The metal tungsten is used for the filaments in bulbs . It has a high melting point and retains its strength when heated.
- Filaments of the light bulbs are made up of the Tungsten element.
- Its symbol is ‘W’ because of its scientific name ‘Wolfram’ and its atomic number is 74.
- Properties of filament:
- It should have a very high melting point.
- It should not burn at room temperature.
- It should have high resistivity.
- If the resistance is less, heat energy is produced is very low which is not sufficient for an electric bulb to glow so the resistance is kept high.
Similar Questions
Two resistors, one of 12 Ω and the other of 24 Ω, are connected in parallel. This combination is connected in series with a 22 Ω resistor and a 12 V battery. The current in 24 Ω resistor is:
The ______ across the ends of a resistor is directly proportional to the current through it, provided its temperature remains the same.
Which of the following gives the correct relation between power ‘P’, resistance ‘R’ and charge ‘Q’ flowing through a wire in ‘t’ seconds?
Two resistors of R Ω and 15 Ω are connected in parallel to get an effective resistance of 12 Ω. Find R.
- Calculate the current flowing through a resistor of 10 $\Omega$ when a potential difference of 140 V is applied across it.
- What enables an electric current to flow in a circuit?
- If $I$ is the current through a wire and $e$ is the charge of an electron, then the number of electrons crossing in $t$ seconds will be given by:
Find the resistance of the wire (in kΩ) through which a 5 mA current flows when 500 V of potential difference is applied across it.
Which of the following correctly describes the direction of electric current?
If an electric heater draws a current of 5 A when the potential difference across its terminals is 75 V, what current will it draw when the potential difference is increased to 150 V?
Important Questions from Current Electricity
Which of the following is a bad conductor of electricity?
In general, in an alternating current circuit
The laws of electromagnetic induction have been used in the construction of a
A 220 volt and 100 watt bulb is connected to a 110 volt source. The power consumption by the bulb is
Which of the following is not correct for the electric potential difference?
