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For good continuity reading of Meggar is?
Ohm
More than 1 Ohm
Zero
Can't say
Zero
A Megger (megohmmeter) is primarily used for testing high-value insulation resistance. When checking for continuity in a low-resistance conductor or wire, a perfect continuity reading indicates zero resistance, representing a closed path for current flow.
A Megger (megohmmeter) is primarily used for testing high-value insulation resistance. When checking for continuity in a low-resistance conductor or wire, a perfect continuity reading indicates zero resistance, representing a closed path for current flow.
R=IVтАЛ тАФ Ohm's Law defining resistance
╬йтЙИ0 тАФ Ideal condition for continuity
The Megger uses an internal DC generator (or battery) to apply a high voltage across a resistance. For continuity testing, if the wire is intact, the resistance is negligible, causing the needle to deflect fully towards the zero-ohm mark on the scale. High resistance values (indicating insulation) would push the needle towards infinity.
A Megger is a high-voltage insulation tester, but can perform basic continuity checks.
Zero resistance indicates a complete, shorted circuit path.
Infinite resistance indicates an open circuit (discontinuity).
For precision continuity (low resistance), a Multimeter (Ohm-meter mode) is usually preferred over a Megger.
Quickly identifies broken wires
Easy to interpret scale
High voltage output can damage sensitive electronic components
Not intended for low-resistance precise measurement
Electrical wiring verification
Cable health monitoring
Ground continuity testing
In practice, a reading of exactly 0 is an idealization; in real circuits, contact resistance leads to a small non-zero value.
Option B (More than 1 Ohm) suggests either a high-resistance fault or a poor connection, not ideal continuity.
The term 'continuity' implies a path with negligible opposition to electron flow.
C is correct тАФ For a good continuity reading, the Megger should indicate zero resistance, signifying a closed electrical path.
Always ensure the circuit is de-energized before using a Megger to avoid damage to the instrument and false readings.