Question

When a coil of copper is kept at a certain distance above a flame, the candle keeps burning, but when the coil is placed over the flame, it is extinguished. This happens because

• A. the coil reduces the amount of oxygen necessary for burning
• B. the coil prevents the setting up of convection currents in air
• C. the coil reduces the radiation losses
• D. the coil conducts away heat very quickly and reduces the temperature of the flame to a value below the ignition temperature

Answer 1

The correct option is D

the coil conducts away heat very quickly and reduces the temperature of the flame to a value below the ignition temperature

the coil conducts away heat very quickly and reduces the temperature of the flame to a value below the ignition temperature