Phy ELECTRICITY REASONING

CAREER POINT REASONING AND INTERNALS FROM NCERT What is a electric circuit ? What is conventional and conduction current ? Define 1 coulomb ? What is the value of micro and milli ampere ? What is electric potential difference ? Define 1 volt ? On whose name is Volt and Ampere kept ? Define 1 ohm ? What would happen if a volt meter is connected in series ? What would happen if a ammeter is connected in parallel ? A wire is stretched to twice its length what will be the effect on the resistivity What is the resistance of an ideal ammeter and why ? A wire is made thinner what will be the effect on the resistance and the resistivity ? Why tungsten is used in bulbs ? Same current flows in a circuit and the bulb . The bulb glows but the wire does not . Why ? Give 3 difference between resistance and resistivity ? Resistivity of copper is 1.60 x 10-6 ohm m . What does it signify ? Why does a an electric bulb becomes dim when an electric heater is in parallel is made on ? Why it becomes bright after some time ? Heat is generated continuously in an electric heater but the temp becomes constant after some time .Why ?