You can't calculate the height of the room unless you know the length of the cable from which the bulb is hanging.
which electric element should be used so as to open the closed electric circuit
A closed circuit.
yes it does have to be a closed circuit
Electric Current
An electric current will flow if there is a voltage, and a conducting path (usually a closed circuit is required).An electric current will flow if there is a voltage, and a conducting path (usually a closed circuit is required).An electric current will flow if there is a voltage, and a conducting path (usually a closed circuit is required).An electric current will flow if there is a voltage, and a conducting path (usually a closed circuit is required).
When a circuit is closed, meaning there is a complete path for the electric current to flow, the current will flow from the positive terminal of the voltage source through the circuit components and back to the negative terminal. This flow of current allows electrical energy to be transferred and work to be done in the circuit.
The formula for calculating the electric flux () through a closed surface is EdA, where E is the electric field and dA is a differential area element on the surface.
A closed path that electric current can flow through is called an electric circuit. It typically includes components such as wires, a power source (e.g., battery), and loads (e.g., light bulbs) that allow the flow of electric charge.
I guess Electric Circuit....
1999
Yes, a complete circuit has a closed loop for the electric current to flow. A closed circuit allows the flow of electrons from the negative terminal of the battery to the positive terminal, completing the circuit and powering the devices connected.
One key difference between electric and magnetic fields is that electric field lines originate from positive charges and end on negative charges, forming closed loops; whereas, magnetic field lines always form closed loops, never having a starting or ending point.