electric current and its effects

who discovered the heating effect of electric current

• Hans christian oersted

• JAMES PRESCOTT JOULE

• THOMAS ALVA EDISON

• ALBERT IENSTEIN

WHAT ARE THE TWO MAJOR REASONS DUE TO WHICH ELCTRIC CURRENT EXCEEDS ITS LIMIT IN A CIRCUIT

• DIRECT TOUCHING OF WIRES AND CONNECTION OF MANY WIRES TO A SINGLE SOCKET

• SHORT CIRCUTING AND DUE TO THE USE OF FUSE

WHAT IS THE PROPERTY OF ACUUMLATORS/SECONDARY CELLS

• THEY ARE NOT RECHARGEBLE

• THEY ARE RECHARGBLE

• THEY HAVE HIGH RESISTIVITY

• THEY HAVE LOW RESISTIVITY

WHY ARE BULBS OFTEN KNOWN AS INCANDESCENT BULB

• BECAUSE ITS ITS NAME

• BECAUSE IT IS A PROPERTY OF A METAL IN WHICH A METAL FIRST GETS HEAT UP AND THEN EMITS LIGHT

WHAT DO ISI MARK INSURES ON A ELCRTICAL APPLIANCE

• THAT IT IS SAFE

• THAT IT IS NO SAFE

• THAT IT HAS HIGH RESISTIVITY

WHY PEOPLE PREFER MCB BETTER THAN ELCTRIC FUSE

• BECAUSE IT AUTOMATICALLY TRIPS DOWN AND THE SUPPLY OF ELECTRICITY CAN BE RESTORED AFTER TURNING THE MCB ON

• BECAUSE IT HAS HIGH RESISTIVITY

ELECTROMAGNETS WORK ON WHICH EFFECT OF CURRENT

WHAT IS THE FORUMALA TO FIND OUT CURRENT

• CHARGE/TIME

• CHARGE*TIME

• TIME/CHARGE

• TIME*CHARGE

WHICH GAS IS MOSTLY USED IN ELECTRIC BULBS

• ARGON

• NEON

• HELIUM

• ALL OF THESE